In 2021, US scientists released 12 litres of red dye into a Missouri river; sensors traced the colored plume for 3.7 kilometres to reveal how environmental DNA moves downstream

Researchers conducted a fascinating experiment using red dye in Missouri’s Big Piney River to map the flow of genetic information. By mimicking the dispersal of animal DNA in flowing waters, the study sheds light on how river currents can influence the spread of environmental DNA. This crucial understanding enhances wildlife monitoring efforts and underscores the importance of riverine systems in biodiversity assessments.
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